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If A :B=2 : 3 and B : C=3 :7, then A+B :...

If `A :B=2 : 3` and `B : C=3 :7`, then `A+B : B+C : C+A` is.

A

`4:10:9`

B

`5:10:9`

C

`5:8:9`

D

`4:8:9`

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Fill in the blanks (i) If A : B = 2 : 3 and B : C = 4 : 5 then C : A = ……….. (ii) If 16% of A = 20% of B, then A : B = …………. (iii) If A = (1)/(3)B and B = (1)/(2)C , then A : B : C ……….. If A : B = 5 : 7 and B : C = 6 : 11 then A : B : C = ……….

If a:b=2:3 and b:c=5:7 then find a:c and a:b:c

Knowledge Check

  • If A: B = 7 : 9 and B : C = 3 : 5 , then A: B : C is equal to

    A
    `7 : 9 : 5 `
    B
    `21 : 35 : 45`
    C
    ` 7 : 9 : 15 `
    D
    `7 : 3 : 15`

  • If A:B=2:3 , B:C = 4:5, C:D = 6:7. then A : B : C : D is-

    A
    `18 : 24 : 30 : 35`
    B
    `16 : 24: 30 : 35`
    C
    `16 : 22 : 30 : 35`
    D
    None of these

  • If A:B =2:3 and B:C=7:8 then A:C is

    A
    `9:11`
    B
    `7:12`
    C
    `16:21`
    D
    none of these

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    Explore conceptually related problems

    If B : A = 2 : 3 and A : C = 5 : 7, then what is (A + B) : (B + C)?

    If 2A = 3B and 3B = 2C, then what is A : B : C?

    If B : A = 2 : 3 and A : C = 5 : 7 , then what is (A + B): (B + Q) ?

    If a : b = 3 : 7 and b : c = 14 : 5, then find a : b : c.

    If a : b = 3 : 7 and b : c = 14 : 5, then find a : b : c.

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